1 ; RUN: opt %s -passes=dce -S | FileCheck %s
3 ; Tests the salvaging of binary operators that use more than one non-constant
6 ; CHECK: #dbg_value(!DIArgList(i32 %a, i32 %b),
7 ; CHECK-SAME: ![[VAR_C:[0-9]+]],
8 ; CHECK-SAME: !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus, DW_OP_stack_value),
10 ; CHECK: ![[VAR_C]] = !DILocalVariable(name: "c"
12 define i32 @"?multiply@@YAHHH@Z"(i32 %a, i32 %b) !dbg !8 {
14 call void @llvm.dbg.value(metadata i32 %b, metadata !12, metadata !DIExpression()), !dbg !13
15 call void @llvm.dbg.value(metadata i32 %a, metadata !14, metadata !DIExpression()), !dbg !13
16 %add = add nsw i32 %a, %b, !dbg !15
17 call void @llvm.dbg.value(metadata i32 %add, metadata !16, metadata !DIExpression()), !dbg !13
18 %mul = mul nsw i32 %a, %b, !dbg !17
19 ret i32 %mul, !dbg !17
22 declare void @llvm.dbg.value(metadata, metadata, metadata)
25 !llvm.module.flags = !{!3, !4, !5, !6}
28 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 11.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
29 !1 = !DIFile(filename: "test.cpp", directory: "/")
31 !3 = !{i32 2, !"CodeView", i32 1}
32 !4 = !{i32 2, !"Debug Info Version", i32 3}
33 !5 = !{i32 1, !"wchar_size", i32 2}
34 !6 = !{i32 7, !"PIC Level", i32 2}
35 !7 = !{!"clang version 11.0.0"}
36 !8 = distinct !DISubprogram(name: "multiply", linkageName: "?multiply@@YAHHH@Z", scope: !1, file: !1, line: 1, type: !9, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
37 !9 = !DISubroutineType(types: !10)
38 !10 = !{!11, !11, !11}
39 !11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
40 !12 = !DILocalVariable(name: "b", arg: 2, scope: !8, file: !1, line: 1, type: !11)
41 !13 = !DILocation(line: 0, scope: !8)
42 !14 = !DILocalVariable(name: "a", arg: 1, scope: !8, file: !1, line: 1, type: !11)
43 !15 = !DILocation(line: 2, scope: !8)
44 !16 = !DILocalVariable(name: "c", scope: !8, file: !1, line: 2, type: !11)
45 !17 = !DILocation(line: 3, scope: !8)